Analytical Sample Bundle Metadata

2008

C-NGO 2005/2007 Boothia Peninsula HMC samples: NTGO KIDD adjusted grain counts

Type: Interpreted data



Bundle Download

Download analytical data for this bundle in one of three formats, depending on the desired convention for treating values below the lower detection limit:

Bundle Description

Appendix B in GSC Open File 6040 reports KIM counts after verification by electron microprobe analysis (summarised in Figure 12, p16 of the report).  Of 184 grains identified by ODM as candidate KIMs, microprobe analysis revealed 102 to be bonafide KIMs, summarized below:

  NTGO KIDD Count
1 Diamond 0
2 Pyrope (peridotitic) 2
3 Pyrope (eclogitic) 2
4 Total garnet 4
5 Chrome diopside 2
6 Chromite 8
7 Picroilmenite 64
8 Orthopyroxene Not picked
9 Olivine 19
10 Perovskite 2
11 Lindsleyite 3
12 Total Grains 102

Perovskite and lindsleyite are not mapped to the NTGO KIDD database.

Sample Classification (Analytical)

IndexSample CountSurveySample TypePrep Lab MaterialControl RefUnknown SourceDuplicates count
35  Till and esker sampling survey, NTS 57A, B, C, D, Boothia mainland area, Kitikmeot region, Nunavut, 2005 and 2007. (more) Till HMC separation (KIDD grouping) No  No 
29  Till and esker sampling survey, NTS 57A, B, C, D, Boothia mainland area, Kitikmeot region, Nunavut, 2005 and 2007. (more) Esker HMC separation (KIDD grouping) No  No 

Analytical Package Description

Laboratory: No laboratory was required

Name: NTGO KIDD remapping (more)

The Northwest Territories Geoscience Office (NTGO) maintains the Kimberlite Indicator and Diamond Database (KIDD).  The KIDD database lists counts for ten quantities:

  • Diamond
  • Pyrope_P
  • Pyrope_E
  • Total_Garnet
  • ChrmDiop
  • Chrom/spin
  • Ilmn_Picro
  • OPX
  • Olivine
  • Total_Grains

This package permits a re-mapping from KIM counts in original reports to KIM counts that are compatible with KIDD.  The grain counts are for the 0.25 – 0.50 mm size fraction.  The weight of the sample that was processed is reported (typically about 10 kg).  The weight of the heavy mineral concentrate that was recovered from the 0.25 – 0.50 mm size fraction is also reported (typically a few tens of grams).

Analytical Suites:

IndexName
1  NTGO KIDD indicator mineral re-assignment

Analytical Methods:

IndexColumn NameSuite OrderMethod OrderSuite RepeatQuantityUnitsDetermination Limit
1  Wt_TblFeed    Wt  grams  
2  Wt_HMC_025_050    Wt  grams  
3  Diamond    Diamond (KIDD)  count  
4  Pyrope_P    Pyrope_P (KIDD)  count  
5  Pyrope_E    Pyrope_E (KIDD)  count  
6  Total_Garnet    Total Garnet (KIDD)  count  
7  ChrmDiop    ChrmDiop (KIDD)  count  
8  Chrom_Spin    Chrom_Spin (KIDD)  count  
9  Ilmn_Picro    Ilmn_Picro (KIDD)  count  
10  OPX  10    OPX (KIDD)  count  
11  Ol  11    Ol (KIDD)  count  
12  Total_Grains  12    Total_Grains (KIDD)  count  
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